Ammoides pusilla (Brot.) Breistr. from Algeria: Effect of harvesting place and plant part (leaves and flowers) on the essential oils chemical composition and antioxidant activity

Tefiani Choukri
Riazi Ali
Belbachir Boumediene
Lahmar Hicham
Aazza Smail
Figueiredo Ana Cristina
Miguel Maria Graça

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Publication date

January 2016

DOI

10.1515/chem-2016-0037

Publisher

De Gruyter

ISSN

2391-5420

Journal

issn:2391-5420

Abstract

The chemical variability and antioxidant activity of the flower and leaf essential oils (EOs) of Ammoides pusilla, collected at Algeria was evaluated. The EOs were isolated by hydrodistillation and analyzed by Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS). Antioxidant activity was assessed by DPPH, ABTS, Reducing Power and TBARS assays. Oxygen-containing monoterpenes (54-77%) dominated all but one A. pusilla leaf EOs, and in two flower EOs (53% both). Thymol dominated in practically all leaf and flowers EOs, but cumin alcohol, p-cymene and limonene attained also relatively high percentages in some EOs. A strong negative correlation (p<0.01) between IC50 values of ABTS, DPPH, and hydroxyl scavenging activity and th...